Case for separation membrane



FIG. 1 is a front view of a case for separation membrane showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a sectional view taken along line VII—VII in FIG. 1 thereof. 

The ornamental design for a case for separation membrane, as shown. 